Paper-bag machine.



Patented July I, I902.

l. BALDWIN &. E. A. KLINE.

PAPER BAG MACHINE.

(Application filed'Jan. 15, 1900.)

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UNITED STATES.

PATENT OFFICE.

WILLIAM I. BALDWIN AND EVERETT A. KLINE, OF CHAGRIN FALLS, OHIO.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 703,635, dateol'kl'uly 1, 1902. Application filed January 15, 1900- Serial Nol,452. (No model.)

To on whom, it may concern:

Be it known that we, WILLIAM I. BALDWIN and EVERETT A. KLINE, citizens of the United States, residing at Chagrin Falls, in the county of Ouyahoga and State of Ohio, have jointly invented certain new and useful Improvements in Paper-Bag Machines 5' and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an improvement in paper-bag machines, and more particularly to machines of the type shown in United States Letters Patent to Charles B. Stillwell, No. 206,638, dated July 30, 1878. In the said Stillwell machine suitable fixed guides are employed, the same being adjusted at U in the patent. It has been found that these fixed guides often cause the bags to clog, and thus interfere with the working of the machine. Our invention is designed to overcome such defect by substituting movable guides for the fixed guides and by the special arrangement of the guides and theirassociated instrumentalities.

In the drawings we have shown the invention in its useful application; but inasmuch as the same can be employed in connection with other machines and resides wholly in the guides and their associated parts we do not show a full operative bag-machine, but

simply an operative structure" of movable guides and carrying-belts with rollers and drums.

A construction to which our invention is readily applied is that shown in the aforesaid patent and in the patent to William Liddell, N 0. 492,498, dated February 28, 1893. The drawingsmay therefore be said to be largely diagrammatic. V

In the drawings, Figure 1 is a side elevation, partly in section. Fig. 2 is an end elevation, showing parts in section. Fig. 3 is a detail section on line 3 3 of Fig. 1.

In the drawings, A designates the frame of the machine, in which is mounted a cylinder .13. Associated with this cylinder are the various instrumentalities for forming the bag; but inasmuch as such features are not a part of our present invention we have omitted them from the drawings.

0 designates carrier-belts extending around the pulleys C, rollers C 0 and creasing-cylinder 0 These belts also extend partially over the pulley-wheels G G at each end of the cylinder B in the usual manner and are carried forward over a pressing and driving roll 0 near the front of the machine and thence over a pressing-roll D, mounted in the suitable bracket C The existence and purpose of these carrier-belts C and the various rolls are well understood in the'art. The cylinder (3" corresponds to the cylinder 0 in'the patent to Stillwell, above mentioned, the cylinderB to the cylinder Ltherein, the pulleys G G to Z Z therein,the roll 0 .to S therein, and the belts O to the belts 12 therein.

Heretofore the partially-formed bags during treatment have passed around cylinder B, being caught at their edges between the belts G and pulleys G G and while so held have passed around the main cylinder B and been discharged onto suitable guides and by continued movement with the belt 0 were carried up and back for final treatment. These metalguides were, asabove stated, objectionable, and to avoid this objection we employ the supplemental carrier-belts F and -F. These belts F and F are arranged to pass, around the pulleys G and G under the beltsC. Said pulleys are arranged at each end of the cylinder B and loose on the shaft thereof, so as to move independently of the cylinder, as shown in said patent to Stillwell. The diameter of these pulleys is preferably slightly less than that of the cylinder, so that the outer surface of the new belts F F is flush with that of the cylinder, as shown in Fig. 3. These belts pass'over the pulleys G G and thence around the driving-cylinder 0 then up over the idler H, and thence forward over the tension-roller H back to the pulleys. They receive their motionfrom the cylinder 0 which is driven by the powerbelt. (Shown in dotted lines.) To preserve the necessary tension on the belts F F, the rolls H are employed, the same being mount- ,ed on arms h, pivotally connected with the uprights K on the machine. The rolls are held at an angle to the uprights, as shown.

It designates an idler mounted in the uprights K and serves to give the proper angle to the belts, so that the rolls H may effect their tensioning purpose.

L designates a pressing-roll mounted on a crank-arm L, having a spring L connected to one end, so that the tendency will be to force the bags into contact with the surface of the pressing-roll C.

In operation the bags in process of formation pass around the cylinderB and are caught at their side edges between the belts C O and F F at the place marked E as they pass the first creasing-cylinder. They are then held and carried between the two pairs of belts during their subsequent passage around the main cylinder B and pressing-roll C to the roller D, whence they are discharged onto old carrying means to be conveyed away. All four of the belts C C F F are driven at the same speed, but slightly faster than the cylinder B, so that a proper tension of the blanks while passing around the cylinder is insured. The roll L, acting against the roll C operates as a pressure-roll for the bags as they pass around the roll 0 and the movement of the belts prevents any clogging of the blanks. 1

From the above description it will be seen that our invention resides in the supplemental carrying-belts F F and their tensionwheels and the associated pressure-roll L.

Having thus described the invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a paper-bag machine, the combination with the cylinder B, pulleys at opposite ends thereof, and two carrying-belts running one above the other on each of said pulleys, a driving-roll for the belts, and means for tensioning said belts.

2. In a paper-bag machine, the combination with the cylinder B and pulleys at opposite ends thereof, of a driving-roll, carryingbelts running on said pulleys and passing around said driving-roll, and a spring-actuated pressure-roll adjacent to said drivingroll and actuating against the same, substantially as described.

3. In a bag-machine, the combination with the cylinder, of pulleys at opposite ends thereof of less diameter than the cylinder, two carrying-belts running one above the other on each of said pulleys, the outer face of the inner belt being substantially flush with the periphery of the cylinder, and means to drive the belts.

In testimony whereof we affix our signatures in presence of two witnesses.

WM. I. BALDWIN. EVERETT A. KLINE.

Witnesses:

DAN WALLACE, E. '1. .TUDD. 

